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package mru
import (
"bytes"
"testing"
"github.com/ethereum/go-ethereum/common/hexutil"
)
const serializedUpdateHeaderMultihashHex = "0x4f000000da070000fb0ed7efa696bdb0b54cd75554cc3117ffc891454317df7dd6fefad978e2f2fbf74a10ce8f26ffc8bfaa07c3031a34b2c61f517955e7deb1592daccf96c69cf001"
func getTestUpdateHeader(multihash bool) (header *updateHeader) {
_, metaHash, _, _ := getTestMetadata().serializeAndHash()
return &updateHeader{
UpdateLookup: *getTestUpdateLookup(),
multihash: multihash,
metaHash: metaHash,
}
}
func compareUpdateHeader(a, b *updateHeader) bool {
return compareUpdateLookup(&a.UpdateLookup, &b.UpdateLookup) &&
a.multihash == b.multihash &&
bytes.Equal(a.metaHash, b.metaHash)
}
func TestUpdateHeaderSerializer(t *testing.T) {
header := getTestUpdateHeader(true)
serializedHeader := make([]byte, updateHeaderLength)
if err := header.binaryPut(serializedHeader); err != nil {
t.Fatal(err)
}
compareByteSliceToExpectedHex(t, "serializedHeader", serializedHeader, serializedUpdateHeaderMultihashHex)
// trigger incorrect slice length error passing a slice that is 1 byte too big
if err := header.binaryPut(make([]byte, updateHeaderLength+1)); err == nil {
t.Fatal("Expected updateHeader.binaryPut to fail since supplied slice is of incorrect length")
}
// trigger invalid metaHash error
header.metaHash = nil
if err := header.binaryPut(serializedHeader); err == nil {
t.Fatal("Expected updateHeader.binaryPut to fail metaHash is of incorrect length")
}
}
func TestUpdateHeaderDeserializer(t *testing.T) {
originalUpdate := getTestUpdateHeader(true)
serializedData, _ := hexutil.Decode(serializedUpdateHeaderMultihashHex)
var retrievedUpdate updateHeader
if err := retrievedUpdate.binaryGet(serializedData); err != nil {
t.Fatal(err)
}
if !compareUpdateHeader(originalUpdate, &retrievedUpdate) {
t.Fatalf("Expected deserialized structure to equal the original")
}
// mess with source slice to test length checks
serializedData = []byte{1, 2, 3}
if err := retrievedUpdate.binaryGet(serializedData); err == nil {
t.Fatal("Expected retrievedUpdate.binaryGet, since passed slice is too small")
}
}
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